Function generate_partial_hash

dpdk/drivers/crypto/ccp/ccp_crypto.c:440–582

}

static int generate_partial_hash(struct ccp_session *sess)
{

	uint8_t ipad[sess->auth.block_size];
	uint8_t	opad[sess->auth.block_size];
	uint8_t *ipad_t, *opad_t;
	uint32_t *hash_value_be32, hash_temp32[8];
	uint64_t *hash_value_be64, hash_temp64[8];
	int i, count;
	uint8_t *hash_value_sha3;

	opad_t = ipad_t = (uint8_t *)sess->auth.key;

	hash_value_be32 = (uint32_t *)((uint8_t *)sess->auth.pre_compute);
	hash_value_be64 = (uint64_t *)((uint8_t *)sess->auth.pre_compute);

	/* considering key size is always equal to block size of algorithm */
	for (i = 0; i < sess->auth.block_size; i++) {
		ipad[i] = (ipad_t[i] ^ HMAC_IPAD_VALUE);
		opad[i] = (opad_t[i] ^ HMAC_OPAD_VALUE);
	}

	switch (sess->auth.algo) {
	case CCP_AUTH_ALGO_SHA1_HMAC:
		count = SHA1_DIGEST_SIZE >> 2;

		if (partial_hash_sha1(ipad, (uint8_t *)hash_temp32))
			return -1;
		for (i = 0; i < count; i++, hash_value_be32++)
			*hash_value_be32 = hash_temp32[count - 1 - i];

		hash_value_be32 = (uint32_t *)((uint8_t *)sess->auth.pre_compute
					       + sess->auth.ctx_len);
		if (partial_hash_sha1(opad, (uint8_t *)hash_temp32))
			return -1;
		for (i = 0; i < count; i++, hash_value_be32++)
			*hash_value_be32 = hash_temp32[count - 1 - i];
		return 0;
	case CCP_AUTH_ALGO_SHA224_HMAC:
		count = SHA256_DIGEST_SIZE >> 2;

		if (partial_hash_sha224(ipad, (uint8_t *)hash_temp32))
			return -1;
		for (i = 0; i < count; i++, hash_value_be32++)
			*hash_value_be32 = hash_temp32[count - 1 - i];

		hash_value_be32 = (uint32_t *)((uint8_t *)sess->auth.pre_compute
					       + sess->auth.ctx_len);
		if (partial_hash_sha224(opad, (uint8_t *)hash_temp32))
			return -1;
		for (i = 0; i < count; i++, hash_value_be32++)
			*hash_value_be32 = hash_temp32[count - 1 - i];
		return 0;
	case CCP_AUTH_ALGO_SHA3_224_HMAC:
		hash_value_sha3 = sess->auth.pre_compute;
		if (partial_hash_sha3_224(ipad, hash_value_sha3))
			return -1;